PCV Hoses allows crankcase pressure to escape the engine in a controlled manor. Plus, now with Dorman's PCV Valve Hoses you can replace just the hose, without the expense and hassle of installing a complete PCV Hose assembly, saving time, money and labor. All Dorman products are engineered in the United States and backed by 100 years of automotive aftermarket experience. Our solutions are thoroughly tested and inspected, and if you experience any difficulty installing or using our parts, we have a dedicated technical support team of ASE Blue Seal certified professionals ready to help. To learn more about our quality and innovation, visit DormanProducts.com.